Results 91 to 100 of about 3,866 (190)

A PROPOSAL FOR REGULARIZED INVERSION FOR AN ILL-CONDITIONED DECONVOLUTION OPERATOR

CT&F Ciencia, Tecnología & Futuro, 2013
From the inverse problem theory aspect, deconvolution can be understood as the linear inversion of an ill-posed and ill-conditioned problem. The ill-conditioned property of the deconvolution operator make the solution of inverse problem sensitive to ...
Herling Gonzalez, Sheryl Avendaño, German Camacho   +2 more
doaj  

Accelerating Ground‐Based Aerosol Retrieval From Shortwave Radiation Using Tabular Foundation Models

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Retrieving aerosol optical properties from broadband surface solar radiation measurements presents a challenging inverse problem that has yet to be fully explored. This study presents a novel framework using optimal estimation (OE) to retrieve aerosol optical depth (AOD) and Ångström exponent, which subsequently serve as regression targets for
Dazhi Yang, Yu Kong, Disong Fu, Yun Chen, Zijing Ding, Xiang'ao Xia, Hongrong Shi   +6 more
wiley   +1 more source

A [3]Rotaxane Containing {Ti7Ga} Rings Linking CuII: Synthesis, Structure, and Spectroscopic Studies

Chemistry – A European Journal, Volume 32, Issue 28, 25 July 2026.
Extended hybrid inorganic‐organic [2]‐ and [3]‐rotaxanes are reported based on heterometallic rings with threads that link CuII complexes; the crystal structures are reported, and the solution behavior is investigated by double electron electron resonance spectroscopy methods.
Selena J. Lockyer, Lubomir Loci, George F. S. Whitehead, Inigo J. Vitorica‐Yrezabal, Grigore A. Timco, Alice M. Bowen, Eric J. L. McInnes, Richard E. P. Winpenny   +7 more
wiley   +1 more source

Wavelength and Polarization Multiplexed Nonlocal Metasurface for Quantitative Phase Microscopy

Nanophotonics, Volume 15, Issue 13, 13 July 2026.
A nonlocal metasurface with wavelength and polarization multiplexed optical transfer functions is demonstrated for performing quantitative phase imaging. The metasurface uses the angular dispersion of optical routing guided mode resonances to extract phase gradient information along different directions for phase retrieval. ABSTRACT Imaging transparent
Haiwei Wang, Shikun Ma, Shaban Sulejman, Niken Priscilla, Wendy S. L. Lee, Peter Francis Mathew Elango, Lukas Wesemann, Elizabeth Hinde, Ann Roberts   +8 more
wiley   +1 more source

On a Level-Set Method for Ill-Posed Problems with Piecewise Nonconstant Coefficients

Journal of Applied Mathematics, 2013
We investigate a level-set-type method for solving ill-posed problems, with the assumption that the solutions are piecewise, but not necessarily constant functions with unknown level sets and unknown level values.
A. De Cezaro
doaj   +1 more source

Low-Rank Tensor Ring Alternating Least Squares With Tikhonov Regularization for Image Completion

IEEE Access
Tensor decomposition has become an important technology for recovering missing information in high-dimensional image and video data. Alternatively, spatial regularization has been incorporated into tensor models such as Tucker, tensor train (TT), and ...
Jung-Chun Chi, Chiao-En Chen, Yuan-Hao Huang   +2 more
doaj   +1 more source

Finite element method for solving nonlinear inverse diffusion problem

پژوهش‌های ریاضی, 2021
In this paper, a numerical method based on the finite element method and the least square scheme with the Tikhonov regularization method for nonlinear inverse diffusion problem is presented.
Hamed Zeidabadi, Reza pourgholi, S. Hashem Tabasi   +2 more
doaj  

Generalized Tikhonov regularization method for an inverse boundary value problem of the fractional elliptic equation

Boundary Value Problems
This research studies the inverse boundary value problem for fractional elliptic equation of Tricomi–Gellerstedt–Keldysh type and obtains a condition stability result.
Xiao Zhang
doaj   +1 more source

Approximate controllability of a semilinear delayed heat equation Tikhonov regularization

Современная математика: Фундаментальные направления
In this work, we study approximate controllability of a semilinear heat equation with delay using the Tikhonov regularization. The considered problem for partial differential equation is transformed into an equivalent operator equation.
S. Kumar
doaj   +1 more source

The Application of Piecewise Regularization Reconstruction to the Calibration of Strain Beams

Sensors
Standard beams are mainly used for the calibration of strain sensors using their load reconstruction models. However, as an ill-posed inverse problem, the solution to these models often fails to converge, especially when dealing with dynamic loads of ...
Jingjing Liu, Wensong Jiang, Zai Luo, Penghao Zhang, Li Yang, Yinbao Cheng, Dian Bian, Yaru Li   +7 more
doaj   +1 more source